Umehluko phakathi kwe-hypromellose esheshayo ne-hot soluble hypromellose

Njengamanje, i-hydroxypropyl methylcellulose emakethe yasekhaya ihlukaniswe ikakhulukazi uhlobo oluncibilikisa ukushisa (olubizwa nangokuthi uhlobo oluncibilika kancane) kanye nohlobo oluncibilika ngokushesha, kanti uhlobo oluncibilikisa ukushisa luwuhlobo olujwayelekile nolusetshenziswa kakhulu lwe-cellulose.

I-Hot-melt (slow-melt) i-hydroxypropyl methylcellulose HPMC ayikaphathwa nge-glyoxal.Uma inani le-glyoxal likhulu, ukuhlakazeka kuzoshesha, kodwa i-viscosity izokhula kancane, futhi uma inani lincane, okuphambene kuzoba yiqiniso.IHydroxypropyl methylcellulose HPMC izonqwabelana lapho ihlangana namanzi abandayo (kodwa lesi simo sizoncibilika kancane, kodwa sithatha isikhathi eside.), kodwa izosakazeka ngokushesha emanzini ashisayo ize inyamalale ngokuphelele emanzini, futhi i-viscosity yayo iyanda. kancane kancane lapho izinga lokushisa lehla kancane kancane kuze kube uketshezi olubonakalayo lwe-viscous.Ukwenzeka kwayo kufana nokuqedwa kwe-high-viscosity sodium carboxymethyl cellulose.Lapho i-cellulose powder ngaphandle kwamanzi ihlakazeka, iba yi-viscous, bese igoqa i-cellulose ngaphakathi engazange ithinte amanzi, kodwa Lesi simo sizophinde sihlakaze kancane, kodwa kuzothatha isikhathi eside.

I-hydroxypropyl methylcellulose HPMC yohlobo olusheshayo iphathwa nge-glyoxal.Ihlakazeka ngokushesha emanzini abandayo, kodwa ayincibiliki ngempela.Kuthatha isikhathi ukuthi i-viscosity yayo iphakame, ngoba isakazeka emanzini kuphela ekuqaleni, okungabalulekile ngempela.Ngokuqedwa okungenhla, i-viscosity ifinyelela inani eliphakeme cishe imizuzu engamashumi amane.Lapho i-viscosity ikhuphuka, isixazululo samanzi siyacaca futhi sibe sobala, okuwukuhlakazeka kwangempela.I-Instant-type hydroxypropyl methylcellulose HPMC isetshenziswa embonini ethile futhi ngeke ihlanganiswe nempushana eyomile, noma lapho idinga ukuncibilika futhi amanzi ashisayo ayikwazi ukusetshenziswa ngenxa yezimo zemishini nezinye izizathu, isixazululo esisekelwe kuhlobo olusheshayo lwe-hypromellose Cellulose. enkingeni enzima kangaka.